每年都有数以百万计的口腔科病人接受含有局麻药和缩血管药的混合注射液。一般说来,口腔科小手术时局麻比全麻的危险性小,即使发生晕厥和精神反应然亦罕见。有些病人常要求全麻,实际情况是这种病人一见注射针即感头晕。口腔科局麻致命者极罕见,此因所用剂量很小之故,但也不能忽视局麻药和缩血管药也可能存在着潜在的致命性。近年有人作过如下统计:①1963—1968年的6年中死于 Every year, millions of stomatologists receive mixed injections of local anesthetics and vasoconstrictors. In general, local anesthetic anesthesia is less dangerous than minor anesthesia in stomatology and is rare even with syncope and psychiatric reactions. Some patients often require general anesthesia, the actual situation is that patients see the injection needle that dizziness. Stalwarts are extremely rare in stomatology because of the small doses used but there is also potential for lethality in the local anesthetics and vasoconstrictors. In recent years, some people made the following statistics: ① 1963-1968 six years died